Heinrich friedbdeg



(No 111mb) L# PRIEDBURG.- GAS BURNER.

11o.' 457,153. Patented' Aug. 4, 1891.

UNITED STATES vPATENT' OFFICE.

LUDYVIG HEINRICH FRIEDBURG, OF NEIV YORK, N. Y., ASSIGNOR TO HIMSELF` AND CHARLES E. DRESSLER, OF SAME'PLACE.

GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 457,153, dated August 4, 1891. Application filed October 9, 1890. Serial No. 367,473. (No model.)

To all whom t may concern:

Be it known that I, LUDWIG HEINRICH FRIEDBURG, residingin the city of New York, in the county and State of New York, have invented an Improved Gas-Burner, of which the following is a specification.

My invention relates to an improved gasburner, my object being to constructa burner that shall produce substantially perfect combustion of the fuel used and afford an extremely hot flame with the aid of a comparatively small amount of fuel. I accomplish this object by combining an inner fuel-pipe which is open at bothends, with an outer pipe or case which is open above the receiving end of the fuel-pipe to air and below said fuel-pipe to gas, said fuel-pipe dipping into said outer pipe.

The invention also consists in other features of construction, which are hereinafter-.more fully specied.

Reference is had to the accompanying drawings, forming wherein'- Figure 1 is a vertical central section of my burner. Fig. 2 is a vertical central section of a modification. Fig. 3 is a vertical central section of still another modification. Fig. 4 is a plan view of the burner shown in Fig. 3. Fig. 5 is a plan view of another modification of my burner.

Similar letters refer to similar parts in all figures.

A is a suitable base or standard so formed as to receive the gas-supply pipe E and the part of this specification,

gas-discharge nozzle F and allow a passage for the gas through the two. The base A supports a cylinder or case L, into which the nozzle F enters, as shown. cylinder L is closed, except to the nozzle, but its upper end is open to the air.

D is a tube sliding on or screwed to the tube L, so as to be movable up and down on the tube L.

I is an upright tube open at both ends and held to the tube D, so as to be directly above the gas-feed F. This tube I is held in position by means of braces ce a, which unite it with the outer tube D. Brackets J and a The lower end of the supporting-ring K, as shown in Figs. l and 2, 5o

lnay be secured to the upper end of the tube D, or otherwise supported when it is desirous to place anything to be heated for some length of time over the flame. The cylinder L is closed at its lower end, so as not to allow the entrance of air from below. It will now beA seen that when the gas is turned on through the gas-supply pipe E and feed-nozzle F it will ascend directly up through the tube I and at the same time carry with it by suc- 6o tion the air from the lower part of the surroundingcase L. A draft of air is thus formed downward through the space between the outer case and the pipe I, as indicated by the arrows in Fig. l.. This air mingles with be -used to tighten each joint, or the sections ofthe extensible cylinder L D may bethreaded and united, as in Fig. 2. Adjustability as to length of the mixing-chamber below the pipe I can also be obtained by moving the pipe I up or down in its support, to which end it is shown screwed into itssupport in Fig. 1.

As the air from without rushes into the up- So per end of the cylinder D it will become heated, since it passes down by the side of the pipe I, which is more or less heated by the iiame. Thus the air becomes Inore rareiied, so that when it meets the gas it is already in good condition to support combustion.

Fig. 2 illustrates how the lower end ofl the pipe I may be flanged outward, so as to more easily receive the gas.

Figs. 3 and 4t show the application of an annular nozzle F.

Fig. 5 illustrates the application of more than one nozzle F and fuel-pipe I in one case L, showing, in fact, three nozzles and three fuel-pipes. It is of course not necessary that the parts I, D, or L be of circular cross-sec tion. They may have any desired form.

substantially as described, for securing said tube I to the movable ring o1' tube D, sub- Io stantially as specified.

4LUDWIG HEINRICH FRIEDBURG.

Witnesses:

ARTHUR V. BRIEsEN, HARRY M. TURK. 

